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run code in 150+ php & hhvm versions
Bugs & Features
<?php $length = 10; $bytes = openssl_random_pseudo_bytes(1); $longs = unpack("S*", $bytes); var_dump($bytes); var_dump($longs); foreach ($longs as $long) { var_dump($long / 0xffff); }
based on NSKJ3
Output for 7.1.0
string(1) "]" array(0) { }
Output for 5.4.35, 5.6.12, 7.0.14
string(1) "�" array(0) { }
Output for 7.0.6
string(1) "W" array(0) { }
Output for 5.6.18, 7.0.5
string(1) "�" array(0) { }
Output for 7.0.4
string(1) "�" array(0) { }
Output for 7.0.3
string(1) "=" array(0) { }
Output for 7.0.2
string(1) "" array(0) { }
Output for 7.0.1
string(1) "" array(0) { }
Output for 5.6.19, 7.0.0
string(1) "+" array(0) { }
Output for hhvm-3.12.0
string(1) "b" array(0) { }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.6.28
string(1) "�" array(0) { }
Output for 5.6.21
string(1) "Y" array(0) { }
Output for 5.6.20
string(1) " " array(0) { }
Output for 5.6.17
string(1) "h" array(0) { }
Output for 5.6.16
string(1) "�" array(0) { }
Output for 5.6.15
string(1) "M" array(0) { }
Output for 5.6.14
string(1) "X" array(0) { }
Output for 5.6.13
string(1) "," array(0) { }
Output for 5.6.11
string(1) "" array(0) { }
Output for 5.6.10
string(1) "" array(0) { }
Output for 5.6.9
string(1) "�" array(0) { }
Output for 5.6.8
string(1) "a" array(0) { }
Output for 5.5.35
string(1) "n" array(0) { }
Output for 5.5.34
string(1) "�" array(0) { }
Output for 5.4.45, 5.5.33
string(1) "�" array(0) { }
Output for 5.5.32
string(1) "Q" array(0) { }
Output for 5.5.31
string(1) "\" array(0) { }
Output for 5.5.30
string(1) "�" array(0) { }
Output for 5.5.29
string(1) "�" array(0) { }
Output for 5.5.28
string(1) "!" array(0) { }
Output for 5.5.27
string(1) "�" array(0) { }
Output for 5.5.26
string(1) "�" array(0) { }
Output for 5.5.25
string(1) "o" array(0) { }
Output for 5.5.24
string(1) "T" array(0) { }
Output for 5.4.44
string(1) "k" array(0) { }
Output for 5.4.43
string(1) "6" array(0) { }
Output for 5.4.42
string(1) "H" array(0) { }
Output for 5.4.41
string(1) "%" array(0) { }
Output for 5.4.40
string(1) """ array(0) { }
Output for 5.4.39
string(1) "" array(0) { }
Output for 5.4.38
string(1) "" array(0) { }
Output for 5.4.37
string(1) "V" array(0) { }
Output for 5.4.36
string(1) "~" array(0) { }
Output for 5.4.34
string(1) "�" array(0) { }
Output for 5.0.0 - 5.4.32
Fatal error: Call to undefined function openssl_random_pseudo_bytes() in /in/54iKN on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: openssl_random_pseudo_bytes() in /in/54iKN on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: openssl_random_pseudo_bytes() in /in/54iKN on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: openssl_random_pseudo_bytes() in /in/54iKN on line 4